“落体”用英语怎么说？

“落体”的拼音为：luò tǐ...

伽俐略对落体的研究提供了终极答案.Galileo's work on falling bodies supplied the final clue.最普通的加速度就是自由落体的加速度.The most common acceleration that of freely falling bodies.但是信用仍旧缺失, 经济依然在自由落体.Yet credit remains scarce, and the economy i...